FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/binkdsp.c
Date: 2024-04-25 15:36:26
Exec Total Coverage
Lines: 59 59 100.0%
Functions: 7 7 100.0%
Branches: 20 20 100.0%
Line Branch Exec Source
1 /*
2 * Bink DSP routines
3 * Copyright (c) 2009 Konstantin Shishkov
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * Bink DSP routines
25 */
26
27 #include "libavutil/attributes.h"
28 #include "binkdsp.h"
29
30 #define A1 2896 /* (1/sqrt(2))<<12 */
31 #define A2 2217
32 #define A3 3784
33 #define A4 -5352
34
35 #define MUL(X,Y) ((int)((unsigned)(X) * (Y)) >> 11)
36
37 #define IDCT_TRANSFORM(dest,s0,s1,s2,s3,s4,s5,s6,s7,d0,d1,d2,d3,d4,d5,d6,d7,munge,src) {\
38 const int a0 = (src)[s0] + (src)[s4]; \
39 const int a1 = (src)[s0] - (src)[s4]; \
40 const int a2 = (src)[s2] + (src)[s6]; \
41 const int a3 = MUL(A1, (src)[s2] - (src)[s6]); \
42 const int a4 = (src)[s5] + (src)[s3]; \
43 const int a5 = (src)[s5] - (src)[s3]; \
44 const int a6 = (src)[s1] + (src)[s7]; \
45 const int a7 = (src)[s1] - (src)[s7]; \
46 const int b0 = a4 + a6; \
47 const int b1 = MUL(A3, a5 + a7); \
48 const int b2 = MUL(A4, a5) - b0 + b1; \
49 const int b3 = MUL(A1, a6 - a4) - b2; \
50 const int b4 = MUL(A2, a7) + b3 - b1; \
51 (dest)[d0] = munge(a0+a2 +b0); \
52 (dest)[d1] = munge(a1+a3-a2+b2); \
53 (dest)[d2] = munge(a1-a3+a2+b3); \
54 (dest)[d3] = munge(a0-a2 -b4); \
55 (dest)[d4] = munge(a0-a2 +b4); \
56 (dest)[d5] = munge(a1-a3+a2-b3); \
57 (dest)[d6] = munge(a1+a3-a2-b2); \
58 (dest)[d7] = munge(a0+a2 -b0); \
59 }
60 /* end IDCT_TRANSFORM macro */
61
62 #define MUNGE_NONE(x) (x)
63 #define IDCT_COL(dest,src) IDCT_TRANSFORM(dest,0,8,16,24,32,40,48,56,0,8,16,24,32,40,48,56,MUNGE_NONE,src)
64
65 #define MUNGE_ROW(x) (((x) + 0x7F)>>8)
66 #define IDCT_ROW(dest,src) IDCT_TRANSFORM(dest,0,1,2,3,4,5,6,7,0,1,2,3,4,5,6,7,MUNGE_ROW,src)
67
68 364064 static inline void bink_idct_col(int *dest, const int32_t *src)
69 {
70
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 364064 if ((src[8]|src[16]|src[24]|src[32]|src[40]|src[48]|src[56])==0) {
71 248207 dest[0] =
72 248207 dest[8] =
73 248207 dest[16] =
74 248207 dest[24] =
75 248207 dest[32] =
76 248207 dest[40] =
77 248207 dest[48] =
78 248207 dest[56] = src[0];
79 } else {
80 115857 IDCT_COL(dest, src);
81 }
82 364064 }
83
84 9173 static void bink_idct_c(int32_t *block)
85 {
86 int i;
87 int temp[64];
88
89
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 82557 for (i = 0; i < 8; i++)
90 73384 bink_idct_col(&temp[i], &block[i]);
91
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 82557 for (i = 0; i < 8; i++) {
92 73384 IDCT_ROW( (&block[8*i]), (&temp[8*i]) );
93 }
94 9173 }
95
96 9173 static void bink_idct_add_c(uint8_t *dest, int linesize, int32_t *block)
97 {
98 int i, j;
99
100 9173 bink_idct_c(block);
101
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 82557 for (i = 0; i < 8; i++, dest += linesize, block += 8)
102
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 660456 for (j = 0; j < 8; j++)
103 587072 dest[j] += block[j];
104 9173 }
105
106 36335 static void bink_idct_put_c(uint8_t *dest, int linesize, int32_t *block)
107 {
108 int i;
109 int temp[64];
110
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 327015 for (i = 0; i < 8; i++)
111 290680 bink_idct_col(&temp[i], &block[i]);
112
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 327015 for (i = 0; i < 8; i++) {
113 290680 IDCT_ROW( (&dest[i*linesize]), (&temp[8*i]) );
114 }
115 36335 }
116
117 21107 static void scale_block_c(const uint8_t src[64]/*align 8*/, uint8_t *dst/*align 8*/, int linesize)
118 {
119 int i, j;
120 21107 uint16_t *dst1 = (uint16_t *) dst;
121 21107 uint16_t *dst2 = (uint16_t *)(dst + linesize);
122
123
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124
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 1519704 for (i = 0; i < 8; i++) {
125 1350848 dst1[i] = dst2[i] = src[i] * 0x0101;
126 }
127 168856 src += 8;
128 168856 dst1 += linesize;
129 168856 dst2 += linesize;
130 }
131 21107 }
132
133 17784 static void add_pixels8_c(uint8_t *restrict pixels, int16_t *block,
134 int line_size)
135 {
136 int i;
137
138
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 160056 for (i = 0; i < 8; i++) {
139 142272 pixels[0] += block[0];
140 142272 pixels[1] += block[1];
141 142272 pixels[2] += block[2];
142 142272 pixels[3] += block[3];
143 142272 pixels[4] += block[4];
144 142272 pixels[5] += block[5];
145 142272 pixels[6] += block[6];
146 142272 pixels[7] += block[7];
147 142272 pixels += line_size;
148 142272 block += 8;
149 }
150 17784 }
151
152 9 av_cold void ff_binkdsp_init(BinkDSPContext *c)
153 {
154 9 c->idct_add = bink_idct_add_c;
155 9 c->idct_put = bink_idct_put_c;
156 9 c->scale_block = scale_block_c;
157 9 c->add_pixels8 = add_pixels8_c;
158 9 }
159